Foldable Antenna Hinge Segmentation for Frequency Band Matching
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Solution Overview
Problem
Foldable electronic devices face challenges in maintaining desired operating frequency bands due to the proximity of antennas to conductive hinge structures, leading to frequency band shifts.
Innovation Solution
The use of a conductive hinge structure in combination with a segment structure and non-conductive dielectric material to adjust the electrical length of the antenna, allowing operation in a desired frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the antenna is disposed near the conductive hinge structure in a foldable electronic device, then the device can achieve a slimming trend and structural integration, but the operating frequency band cannot be matched and frequency band shift occurs
Solution Approach 1:
The conductive lateral member is divided into multiple segments with non-conductive dielectric material filling the gaps between segments. This segmentation electrically isolates portions of the conductive member, allowing the antenna to achieve the desired electrical length and operate in the target frequency band despite the presence of the conductive hinge structure nearby.
2Reliability
If the conductive member is divided into segments with non-conductive dielectric material filling gaps, then the electrical length of the antenna can be adjusted to operate in desired frequency band, but the device complexity increases
Solution Approach 1:
The antenna structure is merged with the conductive lateral member of the device housing. By utilizing the existing structural member as part of the antenna system and filling gaps with dielectric material, the design achieves frequency band matching without adding separate antenna components, thereby reducing overall device complexity.
3Strength
If the antenna operates near the conductive hinge structure, then the device can maintain structural integrity and rigidity, but the antenna performance becomes unstable due to frequency band shift
Solution Approach 1:
Non-conductive dielectric material is introduced as an intermediary substance between segments of the conductive lateral member. This dielectric material electrically isolates the conductive segments while maintaining the physical structural integrity and rigidity of the device housing, allowing the antenna to achieve stable performance despite proximity to the conductive hinge structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration ensures stable antenna performance and frequency band matching, even in foldable devices, by effectively isolating antenna segments with dielectric material.
Implementation Method 1
a non-conductive dielectric material fills a gap between the segments to electrically isolate a certain portion of the conductive member
Data Source
Figure 1
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Figure 2B
AI summary
A portable communication device is provided. The portable communication device comprises a flexible display; a printed circuit board, PCB, including a wireless communication circuit disposed thereon; a conductive hinge structure; and a foldable housing including a first housing accommodating a first portion of the flexible display and the PCB, and a second housing accommodating a second portion of the flexible display, the first housing being rotatably connected to the second housing via the conductive hinge structure and including a first lateral member, the first lateral member forming a side portion of the first housing, wherein the first lateral member comprises: a first conductive portion, a second conductive portion, a third conductive, a first non-conductive portion disposed between the first conductive portion and the second conductive portion, and a second non-conductive portion disposed between the second conductive portion and the third conductive portion.